Ext.define('MyApp.view.CountryPanel', {
    extend:'Ext.dataview.NestedList',
    alias:'widget.countryPanel',
    config:{
        store:'Countries',
        useToolbar:true,
        title:'通讯录', 
        displayField:'text',

        detailCard:{
            html:'You can see detail information here!'
        }
    }
});